<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .div{
            width: 100px;
            height: 100px;
            background: red;
            animation: animation 3s;
        }
        @keyframes animation{
            0%{
                opacity: 0;
                transform: translateY(0);
            }
            50%{
                opacity: .5;
                transform: translateY(20px);
            }
            100%{
                opacity: 1;
                transform: translateY(0);
            }
        }
    </style>
</head>
<body>
    <div class="div">

    </div>
</body>
</html>